HD 11964

HD 11964
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Cetus
Right ascension 01h 57m 09.6074s[1]
Declination −10° 14′ 32.7318″[1]
Apparent magnitude (V) 7.51[2]
Characteristics
Spectral type G9VCN+1[3][2] + M0.0Ve[4]
Apparent magnitude (U) 7.705[citation needed]
Apparent magnitude (B) 8.117[2]
Apparent magnitude (R) 5.960[citation needed]
Apparent magnitude (I) 6.914[2]
Apparent magnitude (J) 6.508±0.019[2]
Apparent magnitude (H) 6.265±0.031[2]
Apparent magnitude (K) 6.168±0.017[2]
U−B color index 0.450
B−V color index 0.607±0.015[2]
V−R color index 0.455
R−I color index 0.405
Variable type Suspected[citation needed]
Astrometry
Radial velocity (Rv)−9.34±0.08[5] km/s
Proper motion (μ) RA: −366.957±0.070[1] mas/yr
Dec.: −242.431±0.052[1] mas/yr
Parallax (π)29.7890 ± 0.0378 mas[1]
Distance109.5 ± 0.1 ly
(33.57 ± 0.04 pc)
Absolute magnitude (MV)3.84[2]
Details
A
Mass1.12±0.03[6] M☉
Radius2.234±0.304[7] R☉
Luminosity2.9[6] L☉
Surface gravity (log g)3.94±0.03[5] cgs
Temperature5,321±16[5] K
Metallicity [Fe/H]0.06±0.04[5] dex
Rotational velocity (v sin i)1.52±0.23[5] km/s
Age7.02±0.67[6] Gyr
B
Radius0.60+0.04
−0.03[1] R☉
Luminosity0.085[1] L☉
Temperature4,033+79
−133[1] K
Metallicity [Fe/H]0.12±0.03[8] dex
Other designations
BD−10°403, GC 2351, GJ 81.1, HD 11964, HIP 9094, SAO 148123, WDS 01572-1015[9]
Database references
SIMBADdata
Exoplanet Archivedata
ARICNSdata

HD 11964 is a binary star system located 110[1] light-years away from the Sun in the equatorial constellation of Cetus. It is visible in binoculars or a telescope but is too faint to be seen with the naked eye, having an apparent visual magnitude of 7.51.[2] The system is drifting closer to the Sun with a radial velocity of −9 km/s.[5] Two extrasolar planets have been confirmed to orbit the primary.

  1. ^ a b c d e f g h i Cite error: The named reference Gaia DR2 was invoked but never defined (see the help page).
  2. ^ a b c d e f g h i j Cite error: The named reference Anderson2012 was invoked but never defined (see the help page).
  3. ^ Cite error: The named reference Gray2006 was invoked but never defined (see the help page).
  4. ^ Cite error: The named reference AlonsoFloriano2015 was invoked but never defined (see the help page).
  5. ^ a b c d e f Cite error: The named reference Jofre2015 was invoked but never defined (see the help page).
  6. ^ a b c Cite error: The named reference apj725_1_721 was invoked but never defined (see the help page).
  7. ^ Cite error: The named reference Belle was invoked but never defined (see the help page).
  8. ^ Cite error: The named reference Mann2013 was invoked but never defined (see the help page).
  9. ^ Cite error: The named reference SIMBAD was invoked but never defined (see the help page).